Actually, as it turns out they are just under 6 months, according to my sweetie. One we hatched, the others we bought as chicks, but they were hatched at roughly the same time. It would be cool if they were this big at 7 weeks old though. We have two black roosters too, also about the same age. I believe all are from Bobbi Porto, if memory serves . . . which it may not actually. My sweetie is asleep, or I'd ask her to make sure. All I know is they're huge, hilarious to watch, and eat like horses, it seems.